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Cornerstone Dec 2 - 8 25 questions
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Monday 2 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 15 = 27

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 7cm

    Answer: 8.06cm
  4. 4. Ratio

    Divide 147 in the ratio 3:1:3

    Answer: 63, 21 and 63
  5. 5. Statistics

    Find the mean of: 9, 11, 2

    Answer: 7.3333333333333

Tuesday 3 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 6x - 6 = 48

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 308 in the ratio 3:4:4

    Answer: 84, 112 and 112
  5. 5. Statistics

    Calculate the mean of: 6, 17, 43, 45, 50, 32

    Answer: 32.2

Wednesday 4 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 2⁄6

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 2x - 20 = 6

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics

    Find the mean of: 12, 7, 16

    Answer: 11.666666666667

Thursday 5 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 1⁄12

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 4x + 10 = 46

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 76 in the ratio 3:1

    Answer: 57 and 19
  5. 5. Statistics

    Calculate the mean of: 30, 16, 41, 36, 6, 28, 27

    Answer: 26.3

Friday 6 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 3⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 5x + 4 = 34

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics

    Calculate the mean of: 29, 13, 44, 40, 20, 39

    Answer: 30.8